GreenlyWhen to plant garlic in Portsmouth: 1 November – end of December
In Portsmouth, garlic: plant from 1 November to the end of December. For planting stock, the places nearby include Alver Valley (garden centre, 6 km) and Abbey Garden Centre (garden centre, 11 km); addresses and opening hours are below.
Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.
The average daily temperature here stays above 0 °C all winter, and at least two months average 10 °C or less: the cold garlic needs, one to two months at 0–10 °C (RHS). The two-month threshold is our rule of thumb. Sources: UVM Extension, UNH Extension, RHS.
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Garlic in Portsmouth: soil, season and weather
Garlic goes into the ground in Portsmouth from 1 November to the end of December; the window opens a month before the first autumn frost. No month averages below 0 °C at night; the coldest nights, in January, average 3.4 °C.
| Planting | 1 November – end of December |
|---|---|
| First autumn frost | 1 December |
| Coldest nights | January, 3.4 °C |
| Soil back at 5 °C in spring | already in the first week of January |
| Harvest (card) | about 8 months after planting: July |
| Daylight | 9:45 on 1 November |
| Daylight at the winter solstice | 7:57 |
Garlic in Portsmouth: care after planting
Planted on 1 November: in the first weeks water every 7 days.
Feeding, by the card’s schedule from that day:
- 1 November — feed: nitrogen
- 29 November — feed: nitrogen
Pests and diseases of garlic to watch for:
Dates count from the first planting day of the window above; a later planting moves them by as many days.
Garlic in nearby cities
1 of the nearest cities share Portsmouth's date.
| City | Distance | Date | Difference |
|---|---|---|---|
| Southampton | 24 km | 24 October – end of December | 8 days earlier |
| Brighton | 67 km | 1 November – end of December | same day |
| London | 103 km | 24 October – end of December | 8 days earlier |
| Oxford | 105 km | 24 October – end of December | 8 days earlier |
| Bristol | 127 km | 23 October – end of December | 9 days earlier |
| Cardiff | 164 km | 23 October – end of December | 9 days earlier |
Where to buy garlic for planting in Portsmouth
Planting stock goes into the ground from 1 November to the end of December; buy it before that. Within 15 km of Portsmouth OpenStreetMap lists 16 garden centres, 4 plant nurseries, 5 markets and 8 farm shops (collected 28 October 2026).
- Alver Valley — garden centre
Barrington Close, PO13 8NZ Gosport · Mon–Sat 09:00–17:30; Sun 10:30–16:30 · 6 km · yourlocalgardencentre.co.uk - Abbey Garden Centre — garden centre
Mill Lane, PO15 5RB · 11 km · abbeygardencentre.co.uk - Garsons — garden centre
Fontley Road, PO15 6QX Fareham · 12 km · garsons.co.uk - Stansted Park Garden Centre — garden centre
Rowlands Castle, PO9 6DX Stansted · 15 km · stanstedparkgardencentre.co.uk
Places: © OpenStreetMap contributors, ODbL.
- How to grow garlic
- All frost dates and weather of Portsmouth
- Shops and markets: Portsmouth
- Selling a surplus in the United Kingdom
- When to plant garlic in the United Kingdom
- Portsmouth: #186 of 801 by frost-free season
- Moon planting calendar for November 2026
- How we calculate the dates
Questions
When to plant garlic in Portsmouth?
In Portsmouth, garlic: plant from 1 November to the end of December. Garlic is best planted early in the window: cloves planted late make smaller bulbs. Late planting works only while the soil is not frozen. Mulch after planting.
When is the last spring frost in Portsmouth?
Last spring frost around 4 March, first autumn frost around 1 December.
